The well-heeled Marilyn Monroe once said, ''Give a girl the right shoes and she can conquer the world.'' The allure of high-heeled shoes is no secret among women, who have used them to entice men from the streets of Ancient Rome to the New York City sidewalks of Carrie Bradshaw. Heels have also been a controversial symbol in the battleground of sexual politics. Now a scientific study in France has measured their power. Scientists from the Universite de Bretagne-Sud conducted experiments that showed that men behave very differently toward high-heeled women. The results, published online in the journal "Archives of Sexual Behaviour," may please the purveyors of Christian Louboutin or Jimmy Choo shoes ? yet frustrate those who think stilettos encourage sexism. The study found if a woman drops a glove on the street while wearing heels, she's almost 50 percent more likely to have a man fetch it for her than if she's wearing flats. Another finding: A woman wearing heels is twice as likely to persuade men to stop and answer survey questions on the street. And a high-heeled woman in a bar waits half the time to get picked up by a man, compared to when her heel is nearer to the ground.